Help with RipJaws on P8-Z77-V Pro

[Weaves]

Hello,

I just built this rig a few months ago:

MB: ASUS P8Z77-V Pro
CPU: i7 3770k
RAM: G.Skill Ripjaws DDR3 1600 (4GBx4)

Everything was working great (with no tweaking) until I started getting BSOD last week.

So I Ran Memtest+ 4.20 on each stick individually. Sure enough one of the sticks immediately returned multiple errors.

So I have three questions:

1) Anything else I need to do to verify bad RAM?

2) Do I possibly need to tweak the timings in the BIOS to prevent those errors?

2) The sequence numbers of all four sticks end in 6999, 7000, 7001, and 7002. 7001 is the bad stick. If I have to return it, do I send back both 7001 AND 7002? or just the one stick that is bad (7001)?

Thanks

[Tradesman]

Sounds like it may have gone bad, sounds like Michigan so would want to contact rma@gskillusa.com on the return, believe they will go either way on an RMA, either the single stick or the entire set (my choice - that way you get a full set tested to work together)